Average annual runoff

Figure expired Created 20 Sep 2007 Published 20 Sep 2007 Last modified 26 Aug 2017
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Notes: Map prepared at a 10 km x 10 km grid resolution, showing average run-off with some smoothing of local detail

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Based on gauged data from hydrometric networks. Run-off in ungauged areas estimated from an empirical relationship relating run-off to precipitation and potential evaporation (Budyko, M.I. and Zubenok, L.I. [1961]: The determination of evaporation from the land surface. Izv. Akad, Nauk SSSR. In Ser. Geogr., No 6, p. 3-17).

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